ZyXEL PLA4215KIT 500Mbps Powerline Gigabit Ethernet Adapter (Pair) for $99.99 shipped after applying coupon code EMCNJHD55 to take $100 off. Here is a screenshot for your reference. The set comes in a pair and uses gigabit Ethernet to achieve up to 500mbps transfer speed. Note that at the time of this post, 8 out of 9 user reviews have given it 4/5 and 5/5 ratings. Most places have it for over $160.